Respuesta :

Answer:

83

Step-by-step explanation:

All sides of a triangle combined equal 180 so you would add the values you have and then subtract it from 180

Step-by-step explanation:

We know that:-

All angles of a triangle sum up to give 180°.

So, According to Question,

[tex]20 + 87 + x = 180[/tex]

[tex]107 + x = 180[/tex]

[tex]x = 180 - 107[/tex]

[tex]x = 73[/tex]

So, x = 73° is the answer.

Hope it helps :)